Merge branch 'there-are-a-cleancode-and-a-parameter-check-for-hns3-driver'

Jijie Shao says:

====================
There are a cleancode and a parameter check for hns3 driver

This patchset includes:
 1. a parameter check omitted from fix code in net branch
   https://lore.kernel.org/all/[email protected]/
 2. a small clean code
====================

Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: kuba-moo

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

@@ -1927,6 +1927,31 @@ static int hns3_set_tx_spare_buf_size(struct net_device *netdev,
 	return ret;
 }
 
+static int hns3_check_tx_copybreak(struct net_device *netdev, u32 copybreak)
+{
+	struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+	if (copybreak < priv->min_tx_copybreak) {
+		netdev_err(netdev, "tx copybreak %u should be no less than %u!\n",
+			   copybreak, priv->min_tx_copybreak);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int hns3_check_tx_spare_buf_size(struct net_device *netdev, u32 buf_size)
+{
+	struct hns3_nic_priv *priv = netdev_priv(netdev);
+
+	if (buf_size < priv->min_tx_spare_buf_size) {
+		netdev_err(netdev,
+			   "tx spare buf size %u should be no less than %u!\n",
+			   buf_size, priv->min_tx_spare_buf_size);
+		return -EINVAL;
+	}
+	return 0;
+}
+
 static int hns3_set_tunable(struct net_device *netdev,
 			    const struct ethtool_tunable *tuna,
 			    const void *data)
@@ -1943,6 +1968,10 @@ static int hns3_set_tunable(struct net_device *netdev,
 
 	switch (tuna->id) {
 	case ETHTOOL_TX_COPYBREAK:
+		ret = hns3_check_tx_copybreak(netdev, *(u32 *)data);
+		if (ret)
+			return ret;
+
 		priv->tx_copybreak = *(u32 *)data;
 
 		for (i = 0; i < h->kinfo.num_tqps; i++)
@@ -1957,6 +1986,10 @@ static int hns3_set_tunable(struct net_device *netdev,
 
 		break;
 	case ETHTOOL_TX_COPYBREAK_BUF_SIZE:
+		ret = hns3_check_tx_spare_buf_size(netdev, *(u32 *)data);
+		if (ret)
+			return ret;
+
 		old_tx_spare_buf_size = h->kinfo.tx_spare_buf_size;
 		new_tx_spare_buf_size = *(u32 *)data;
 		netdev_info(netdev, "request to set tx spare buf size from %u to %u\n",

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -2182,8 +2182,8 @@ static bool hclge_drop_pfc_buf_till_fit(struct hclge_dev *hdev,
 	return hclge_is_rx_buf_ok(hdev, buf_alloc, rx_all);
 }
 
-static int hclge_only_alloc_priv_buff(struct hclge_dev *hdev,
-				      struct hclge_pkt_buf_alloc *buf_alloc)
+static bool hclge_only_alloc_priv_buff(struct hclge_dev *hdev,
+				       struct hclge_pkt_buf_alloc *buf_alloc)
 {
 #define COMPENSATE_BUFFER	0x3C00
 #define COMPENSATE_HALF_MPS_NUM	5